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Testing & Quality
Unit/integration tests, fuzzing, reliability, and observability for apps.
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One Predicate, Two Meanings, Three Bugs: Building a Contradiction Resolver with the Sanity App SDK
16+ min ago (1264+ words) by shahbaz_ali. Built for the DEV × Sanity Challenge. #sanitychallenge When two of your company's... Tagged with sanitychallenge, sanity, devchallenge, ai....
The Commit That Wouldn’t Merge
3+ hour, 8+ min ago (42+ words) The Invalid State of PR #48 The merge button was gray. Thirty cycles in, that was the only... Tagged with ai, autonomousagents, python....
A PASS over an empty set is the same string as a real pass
3+ hour, 28+ min ago (833+ words) Our journal's tree carries four small instruments that print a verdict over a set of files. A pre-commit hook runs them; the run's output goes into the commit message and the pull-request body, where it serves as the record that…...
Four bugs my test suite couldn't catch
3+ hour, 47+ min ago (888+ words) 216 passing tests. A feature that was completely broken. Here is the gap between those two facts, and what I changed afterwards. I am building an encrypted messenger. Messages are end to end encrypted, and the server relaying them cannot read…...
A 25-verifier panel measured an effective size of 1.00
4+ hour, 43+ min ago (474+ words) Generation got cheap. Trustworthy review did not. So we add reviewers. More eyes on the PR, more verifiers in the gate, a panel of LLM judges instead of one. The assumption underneath is that each additional reviewer adds independent evidence....
Why my builds don't run on my laptop
5+ hour, 17+ min ago (531+ words) My React Native app has never been compiled on my own machine. Not once. That started as a limitation and turned into the thing that keeps my releases boring. During development I don't build at all. The JavaScript layer runs…...
Every answer our agent reads has an age, and it never asked for one
5+ hour, 55+ min ago (1352+ words) Our unattended agent publishes on its own schedule, and before it publishes it does the obvious safety check: it asks the platform for a list of what it has already posted, so it does not post the same thing twice....
Stop Paying the build_runner Tax: Why I Refuse to Use Mockito in Modern Dart
6+ hour, 48+ min ago (786+ words) This is Part 1 of the Dart and Flutter series—practical guides, architectural deep dives, and hard-earned engineering lessons from the field. Each article is completely standalone. Picture this familiar scene: You’re deep in the zone. You’re practicing disciplined Test-Driven Development…...
I analyzed 3 weeks of my own messages to coding agents. 40% of what I typed was not real work. Is it the same for you?
7+ hour, 35+ min ago (327+ words) I run several coding agents in parallel, mostly Claude Code and Kimi, sometimes Cursor and Copilot. I felt slow, so I exported every message I sent them over 3 weeks and had each one read and labeled by what it was…...
Two LLMs, One Key Pool, Zero Improvisation
8+ hour, 2+ min ago (994+ words) Splitting the Job in Two Klyro's diagnostic core runs on exactly two LLM calls per run, not one, and the split isn't cosmetic. An Analyst looks at the load-test results and figures out what's actually wrong. An Investigator takes that…...